Indoor unit and air-conditioning apparatus

Abstract

An indoor unit includes: a casing including a top plate and lateral plates; a motor mounted to a central part on an inner surface side of the top plate; a turbofan fixed to a rotary shaft of the motor and configured to rotate through drive of the motor; a drain pan received in the casing and mounted to the lateral plates of the casing; and a bellmouth mounted to the drain pan and configured to rectify a fluid flowing into the casing. The drain pan includes a positioning fitting having: a casing-fixing threaded hole for allowing the drain pan to be fixed to the casing with a screw; and a bellmouth-fixing threaded hole for allowing the bellmouth to be fixed to the drain pan with a screw.

The invention claimed is: 
     
       1. An indoor unit, comprising:
 a casing comprising a top plate and lateral plates; 
 a motor mounted to a central part on an inner surface side of the top plate; 
 a fan fixed to a rotary shaft of the motor and configured to rotate through drive of the motor; 
 a drain pan received in the casing and mounted to the lateral plates of the casing; and 
 a bellmouth mounted to the drain pan and configured to rectify a fluid flowing into the casing, 
 the drain pan comprising a positioning fitting having
 a casing-fixing threaded hole for allowing the drain pan to be fixed to the casing with a screw; and 
 a bellmouth-fixing threaded hole for allowing the bellmouth to be fixed to the drain pan with a screw, 
 
 wherein 
 the positioning fitting has an oblong hole for allowing the bellmouth to be positioned in conjunction with the bellmouth-fixing threaded hole, 
 the drain pan has a recessed portion conforming to the oblong hole, and 
 the bellmouth has a projection portion to be fitted into the recessed portion through the oblong hole. 
 
     
     
       2. The indoor unit of  claim 1 , wherein the bellmouth and the drain pan are positioned to each other at one position. 
     
     
       3. The indoor unit of  claim 2 , wherein the positioning fitting is formed by processing a metal plate or a resin. 
     
     
       4. The indoor unit of  claim 1 , wherein the positioning fitting is formed by processing a metal plate or a resin. 
     
     
       5. An air-conditioning apparatus, comprising:
 the indoor unit of  claim 1 ; and 
 an outdoor unit configured to supply heat to the indoor unit side. 
 
     
     
       6. An air-conditioning apparatus, comprising:
 the indoor unit of  claim 2 ; 
 an outdoor unit configured to supply heat to the indoor unit side. 
 
     
     
       7. An air-conditioning apparatus, comprising:
 the indoor unit of  claim 4 ; 
 an outdoor unit configured to supply heat to the indoor unit side.